pen.du.lum
n.(名词)A body suspended from a fixed support so that it swings freely back and forth under the influence of gravity, commonly used to regulate various devices, especially clocks.Also called simple pendulum 摆:在一固定点悬垂的可在重力影响下自由来回摆动的摆体,通常用于调校钟等各种仪器也作 simple pendulumSomething that swings back and forth from one course, opinion, or condition to another:沿某一路线、想法或事态来回摆动的东西:例句:the pendulum of public opinion.民意变化不定
来源:New Latin 现代拉丁语 probably from Italian pendolo [pendulous, pendulum] 可能源自 意大利语 pendolo [松垂的,钟摆] from Latin pendulus [hanging] * see pendulous 源自 拉丁语 pendulus [垂悬的] *参见 pendulous